#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

uint64_t ans = 0;

const vector<vector<unsigned>> v {
    { 8, 02, 22, 97, 38, 15, 00, 40, 00, 75, 04, 05, 07, 78, 52, 12, 50, 77, 91,  8, },
    {49, 49, 99, 40, 17, 81, 18, 57, 60, 87, 17, 40, 98, 43, 69, 48, 04, 56, 62, 00, },
    {81, 49, 31, 73, 55, 79, 14, 29, 93, 71, 40, 67, 53, 88, 30, 03, 49, 13, 36, 65, },
    {52, 70, 95, 23, 04, 60, 11, 42, 69, 24, 68, 56, 01, 32, 56, 71, 37, 02, 36, 91, },
    {22, 31, 16, 71, 51, 67, 63, 89, 41, 92, 36, 54, 22, 40, 40, 28, 66, 33, 13, 80, },
    {24, 47, 32, 60, 99, 03, 45, 02, 44, 75, 33, 53, 78, 36, 84, 20, 35, 17, 12, 50, },
    {32, 98, 81, 28, 64, 23, 67, 10, 26, 38, 40, 67, 59, 54, 70, 66, 18, 38, 64, 70, },
    {67, 26, 20, 68, 02, 62, 12, 20, 95, 63, 94, 39, 63,  8, 40, 91, 66, 49, 94, 21, },
    {24, 55, 58, 05, 66, 73, 99, 26, 97, 17, 78, 78, 96, 83, 14, 88, 34, 89, 63, 72, },
    {21, 36, 23,  9, 75, 00, 76, 44, 20, 45, 35, 14, 00, 61, 33, 97, 34, 31, 33, 95, },
    {78, 17, 53, 28, 22, 75, 31, 67, 15, 94, 03, 80, 04, 62, 16, 14,  9, 53, 56, 92, },
    {16, 39, 05, 42, 96, 35, 31, 47, 55, 58, 88, 24, 00, 17, 54, 24, 36, 29, 85, 57, },
    {86, 56, 00, 48, 35, 71, 89, 07, 05, 44, 44, 37, 44, 60, 21, 58, 51, 54, 17, 58, },
    {19, 80, 81, 68, 05, 94, 47, 69, 28, 73, 92, 13, 86, 52, 17, 77, 04, 89, 55, 40, },
    { 4, 52,  8, 83, 97, 35, 99, 16, 07, 97, 57, 32, 16, 26, 26, 79, 33, 27, 98, 66, },
    {88, 36, 68, 87, 57, 62, 20, 72, 03, 46, 33, 67, 46, 55, 12, 32, 63, 93, 53, 69, },
    {04, 42, 16, 73, 38, 25, 39, 11, 24, 94, 72, 18,  8, 46, 29, 32, 40, 62, 76, 36, },
    {20, 69, 36, 41, 72, 30, 23, 88, 34, 62, 99, 69, 82, 67, 59, 85, 74, 04, 36, 16, },
    {20, 73, 35, 29, 78, 31, 90, 01, 74, 31, 49, 71, 48, 86, 81, 16, 23, 57, 05, 54, },
    { 1, 70, 54, 71, 83, 51, 54, 69, 16, 92, 33, 48, 61, 43, 52, 01, 89, 19, 67, 48, },
};

void fuck1() { // rows
    for (const auto& row : v) {
        for (int i = 3; i < row.size(); ++i) {
            uint64_t tmp = 1;
            for (int j = 0; j < 4; ++j) 
                tmp *= row[i - j];
            ans = max(ans, tmp);
        }
    }
}

void fuck2() { // columns
    for (auto j = 0; j < v[0].size(); ++j) {
        for (auto i = 3; i < v.size(); ++i) {
            uint64_t tmp = 1;
            for (auto k = 0; k < 4; ++k) {
                tmp *= v[i - k][j];
            }
            ans = max(ans, tmp);
        }
    }
}

void fuck3() { // nw -> se
    for (auto i = 0; i < v.size(); ++i) {
        for (auto j = 0; j < v[0].size(); ++j) {
            uint64_t tmp = 1;
            for (auto k = 0; k < 4; ++k) {
                auto x = i + k;
                auto y = j + k;
                if (0 <= x && x < v.size() && 0 <= y && y < v[0].size()) 
                    tmp *= v[x][y];
                else 
                    tmp = 0;
            }
            ans = max(ans, tmp);
        }
    }
}

void fuck4() { // ne -> sw
    for (auto i = 0; i < v.size(); ++i) {
        for (auto j = 0; j < v[0].size(); ++j) {
            uint64_t tmp = 1;
            for (auto k = 0; k < 4; ++k) {
                auto x = i + k;
                auto y = j - k;
                if (0 <= x && x < v.size() && 0 <= y && y < v[0].size()) 
                    tmp *= v[x][y];
                else 
                    tmp = 0;
            }
            ans = max(ans, tmp);
        }
    }
}

int main() {
    fuck1();
    fuck2();
    fuck3();
    fuck4();
    cout << ans << endl;
}